REPORT OF NATIONAL MUSEUM, 1921. 25 
corner”; Edward Kasner, “A model of the solar gravitational 
field”; George D. Birkhoff, “On the problem of three or more 
bodies”; L. E, Dickson, (1) “Quaternions and their generaliza- 
tions,” and (2) “Investigations in algebra and number theory”; 
H. F. Blichfeldt, “ On the approximate solutions in integers of a set 
of linear equations”; H. N. Russell, “A provisional theory of new 
stars”; F. Schlesinger, “The compilation of star catalogues by means 
of a doublet camera”; Vernon Kellogg, “The National Research 
Council”; W. S. Adams, “The order of the stars”; C. G. Abbot, 
“ Cooking with solar heat on Mount Wilson”; F. W. Clarke, “ The 
evolution of matter”; Albert Einstein, “ Relativity”; Austin H. 
Clark, “ The classification of animals”; L. O. Howard, “ Attempts to 
acclimatize Aphelinus mali in France, South Africa, New Zealand, 
and Uruguay”; C. D. Walcott, “ Note on structure of the trilobite”; 
J. C. Merriam, “ Origin and history of the Ursidae or bears in the 
Western Hemisphere, with particular reference to the bearing cf 
this question on problems of geographical history”; H. F. Osborn, 
“The evolution, phylogeny, and classification of the Proboscidae” ; 
Simon Flexner, “ Experiments in epidemiology”; Graham Lusk, 
“Effect of administering various simple metabolites upon the heat 
production of the dog”; Jacques Loeb, “The physical and chemical 
behavior of proteins”; Francis G. Benedict, Edward L. Fox, and 
Marion L. Baker, “The skin temperature of Pachyderms”; L. R. 
Jones, “ The temperature factor in phytopathology ”; T. B. Osborne 
and L. B. Mendel, “ Results of feeding experiments with mixtures 
of foodstuffs in unusual proportions”; C. B. Davenport, “ Popula- 
tion”; and E. L. Thorndike, ‘‘ Measuring higher grades of intelli- 
gence.” ‘The following papers were presented by title only: J. M. 
Clarke, “Life of James Hall, of Albany, geologist and paleontolo- 
gist, 1811-1890”; Franz Boas, “The difference between variable 
series”; Raymond Pearl and Charmian Howell, “A study of specific 
forces of mortality.” 
The National Research Council used the auditorium on the even- 
ing of February 21, 1921, for a lecture by Dr. C. H. Herty on funda- 
mental chemistry, illustrated by a small exhibit displayed in the ad- 
joining foyer. 
To afford the many men and women throughout the country in- 
terested in venereal disease control work an opportunity of hearing 
lectures by leading authorities on the subject, the Bureau of Public 
Health Service, Treasury Department, conducted an Institute on 
Venereal Disease Control in the auditorium and committee rooms, 
from November 22 to December 4, including motion-picture demon- 
strations on the evenings of November 26 and 29 and December 1, 
and a meeting of the American Association of Women in Public 
Health on the evening of November 24. Rooms 45 and 46 and the 
